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Security Advisory - Type Confusion Vulnerability on Huawei Smartphones

  • SA No:huawei-sa-20171018-02-smartphone
  • Initial Release Date: Oct 18, 2017
  • Last Release Date: Oct 18, 2017

There is a type confusion vulnerability on Huawei smartphones. The program initializes a variable using one type, but it later accesses that variable using a type that is different with the original type when do certain register operation. Successful exploit could result in buffer overflow then may cause malicious code execution. (Vulnerability ID: HWPSIRT-2017-08136)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2017-8159.

Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171018-02-smartphone-en

Product Name

Affected Version

Resolved Product and Version

Agassi-L09HN

AGS-L09C233B019

Agassi-L09HN AGS-L09C233B210

Agassi-W09HN

AGS-W09C233B019

Agassi-W09HN AGS-W09C233B210

Kobe-L09AHN

KOB-L09C233B017

Kobe-L09AHN KOB-L09C233B222

Kobe-W09CHN

KOB-W09C233B012

Kobe-W09CHN KOB-W09C233B223

Successful exploit could result in buffer overflow then may cause malicious code execution.

The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).

Base Score: 6.5 (AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H)

Temporal Score: 6.0 (E:F/RL:O/RC:C)

This vulnerability can be exploited only when the following conditions are present:

The attacker has tricked the victim execute the malicious app with system privilege.

Vulnerability details:

The program initializes a variable using one type, but it later accesses that variable using a type that is different with the original type when do certain register operation. Successful exploit could result in buffer overflow then may cause malicious code execution.

Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades. For TAC contact information, please refer to Huawei worldwide website at http://www.huawei.com/en/psirt/report-vulnerabilities.

This vulnerability was reported to Huawei PSIRT by ADLab of Venustech. Huawei would like to thank ADLab of Venustech for working with us and coordinated vulnerability disclosure to protect our customers.

2017-10-18 V1.0 INITIAL

Huawei adheres to protecting the ultimate interests of users with best efforts and the principle of responsible disclosure and deal with product security issues through our response mechanism.

To enjoy Huawei PSIRT services and obtain Huawei product vulnerability information, please visit http://www.huawei.com/en/psirt.

To report a security vulnerability in Huawei products and solutions, please send it to PSIRT@huawei.com. For details, please visit http://www.huawei.com/en/psirt/report-vulnerabilities.

This document is provided on an "AS IS" basis and does not imply any kind of guarantee or warranty, either express or implied, including the warranties of merchantability or fitness for a particular purpose. In no event shall Huawei or any of its directly or indirectly controlled subsidiaries or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. Your use of the document, by whatsoever means, will be totally at your own risk. Huawei is entitled to amend or update this document from time to time.